Dodge Diesel Engines
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Back in 1989 is when Cummins B series diesel engines were introduced into the pickup line. They used Dodge diesel engines for many years to follow but this was the first year. This design was totally different from the Chevy diesel or the Ford diesel who were the market competitors. The Dodge diesel had direct injection instead of indirect injection. That meant the Dodge did not need glow plugs. Also, both the Chevy and the Dodge were V8 engines and the Dodge Cummins 5.9 liter was an in-line 6 cylinder. The Dodge was turbocharged but the Chevy 6.2 liter and the Ford 7.3 liter were both non-turbo types. Back in the 70’s Dodge did offer a Mitsubishi diesel engine in a few of its truck but was under powered and a complete failure for their 1st attempt. This version stayed pretty much the same thru 1993.
Dodge only offered the diesel engines in the ¾ ton and larger trucks. This was following suit with most other automakers. The diesel engine is a large, heavy, and powerful piece of equipment. Most diesel engines weight about 1000 lbs. and are physically larger than gasoline engines. They require more under the hood room for exhaust, cooling and accessories. This requires a larger sturdier chassis than a ½ ton truck can offer. The torque of the engine also has special needs over the power of the normal gas engine.
The Dodge ¾ ton trucks are equipped with a larger rear differential. This is needed to handle the additional torque the diesel engine makes. Most ¾ ton and 1 ton trucks are used as work truck so they are towing larger loads or hauling more weight than a ½ ton truck. Thie requires the frame to be larger to accommodate a heavy duty suspension and brakes. The Dodge diesel has become the most used truck on the highway for people who need a reliable heavy duty work truck.